霍尔的情人
2018-11-21 15:56
<!DOCTYPE html> <html> <head> <title> 事件</title> <script type="text/javascript"> function count(){ var v1 = document.getElementById ("txt1").value; var v2 = document.getElementById ("txt2").value; var v3 = document.getElementById ("select").value; var result = ""; switch(v3){ case "+": result = parseInt(v1)+parseInt(v2); break; case "-": result = parseInt(v1)-parseInt(v2); break; case "*": result = parseInt(v1)*parseInt(v2); break; default: result = parseInt(v1)/parseInt(v2); } document.getElementById("fruit").value = result; } </script> </head> <body> <input type='text' id='txt1' /> <select id='select'> <option value='+'>+</option> <option value="-">-</option> <option value="*">*</option> <option value="/">/</option> </select> <input type='text' id='txt2' /> <input type='button' value=' = ' onclick='count()' /> <input type='text' id='fruit' /> </body> </html>
请问这哪里有错啊???为什么就是没有反应呢?Hbuilder报错的时候说:[Web浏览器] "Uncaught SyntaxError: Unexpected token ILLEGAL" /js测试/new_file.html (13)
;分号要在英文状态下输出!
JavaScript进阶篇
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